Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f700a160711aca5…

MALICIOUS

PDF

69.1 KB Created: 2021-03-14 14:07:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fcef4ed0df6399e82b64d54dc573f6b4 SHA-1: 33d6ad0b88a1346c9a23b2f30584992e78b219b9 SHA-256: 1f700a160711aca5a49b6e01243489ed0e5a2161bf3e31a38b2f2496186a956d
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The sample was identified as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic confirms this behavior, suggesting the document is part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of external URIs is a strong indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://bologen.ru/wix?keyword=precise+bombs+pathfinder PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4392661/normal_5fcdbe1cb30c7.pdfIn PDF document text
    • http://puveputado.sportsontheweb.net/mugakixolaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384633/normal_603a3e868b3e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459323/normal_603155c3bd6b7.pdfIn PDF document text
    • https://cdn.sqhk.co/kikolibub/DTUnXgc/jurotegilek.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/fexjfhf/29248553144.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488560/normal_5fceeb317c85d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447663/normal_60335aa6c8c25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470977/normal_604ad496c233f.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/gkhhrhp/16593151311.pdfIn PDF document text
    • http://dotekebenutedex.scienceontheweb.net/international_finance_management_mcq.pdfIn PDF document text
    • http://xejitifuwoligaf.mypressonline.com/bijapopixelawa.pdfIn PDF document text
    • http://misujupino.getenjoyment.net/why_is_my_polk_subwoofer_not_working.pdfIn PDF document text
    • http://mujoxoluvisukid.getenjoyment.net/optimate_4_bmw_charger.pdfIn PDF document text
    • http://retamos.mygamesonline.org/82804437444.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447880/normal_5ffb8ccf9372f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kopurelotalad.onlinewebshop.net/becoming_animal_an_earthly_cosmology.pdfIn PDF document text
    • http://nevabaza.atwebpages.com/the_curious_case_of_benjamin_button_burlington_books.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD053 5504 bytes
SHA-256: a4be641edadd06d6baf5f1990cc2819edd2a9ac75437a5ee799e74e6227427db
font_01_sfnt_off0000e2d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D5 10696 bytes
SHA-256: a215b8f55a2a3a579a4e0fdc687a6d0aad67982081a137b9089d4254f5ef51d6

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